20% What made the situation all the more frustrating is periods of high congestion which can threaten the stability of a local network can be quite brief. So, I am pretty much left in the dark about whether all the energy my panels are theoretically producing is being utilised, or (which is my fearful assumption) up to 1.6kW are wasted whenever the panels produce more than 5kW AC. I have 13.25 kW of panels with a 9.8 kW LG Chem battery and a 10 kW inverter export limited to 5 kW. &K?BK:T$A1Cn As the LG Chem battery charges using DC current from the panels it is possible to go over the 10 kW inverter limit by charging the LG Chem battery in the middle of the day. Quotes vary and the deal has to be value/advantage logical or whats the point. But I will warn you, even with the high cost of grid electricity and the low solar feed-in tariff in Western Australia, batteries normally wont pay for themselves. 3. Hi Everyone, Powercor's technical assessment aims for these works to enable at least 80% of new solar applications to export 5 kW. 220 But youll need to be confident you wont be hit with high demand charges during the evening peak that will wipe out any advantage. As a general rule, 5kW tends to be the upper system size limit for single-phase connections, but some networks allow up to 10kW. Australian network service providers (including CitiPower) use solar export limits to keep voltage levels in transmission lines operating within safe . I got a question about export limiter that I hope to get some answers from the community. I prefer a profile that just has the voltages set to a high voltage threshold, and if I have to sacrifice V-W mode, so be it. just wondering if anybody can shed some light on the following, Reminder: In Australia, you are allowed to install 33% more panel capacity than the inverter capacity for example, a 10 kW inverter can have up to 13.33 kW of panels attached. 0000005359 00000 n Good question Tony. 5kW export limiter imposed on one inverter. Interesting article. The good news is, if you had a total of 6.6 kilowatts of solar youd probably loose very little due to export limiting if you consume half the output of a 3 kilowatt system and can export 3 kilowatts. ACTs EvoEnergy Network Area: Covers most homes in the ACT, especially in built-up areas. In looking to the future, regardless of whether we like it, in spite of, and, despite, the great efforts of the WA state government, and its parent, the Australian feral LNP/ALP government, battery powered road vehicles will come to Australia, and, displace ICE vehicles. Powercor claims 30% increase in rooftop solar export approvals Victorian network service provider Powercor claims a major works program designed to alleviate grid congestion in areas of high rooftop solar PV penetration has boosted the approval rate for new solar connections to export excess energy to the grid by an impressive 30%. I have a new residential PV system in Perth WA, 6.6kW total panel capacity and a 5kW inverter (Growatt Min 5000TL-X). But if people send a lot of power into the line then the voltage at the far end, instead of being lower than at the sending end, becomes higher. And Set Power Limit to 100%. I think it is illegal in WA to rewire your inverter or modify any parameters, as it may result in more than 5kW being sent to the grid, so I will just bite the bullet and see that I use as much solar as possible. I have previously posted (or, submitted for posting), the proposition that what is needed, is a hybrid (not meaning in this instance, a hybrid inverter as is commonly used) inverter that is like a cross/combination, of the Goodwe GW5000-MS inverter (or, kind of, the GW10K-MS, in terms of power conversion), and the Goodwe GW5048D-ES; three GW5000-MS provides for up to 10kW of panels generating capacity, across three MPPTs (strings? How to correctly configure inverter settings. ( Swearing revenge, he began his lifelong quest to reduce the harm the environment could cause. I have divided Australias regions into three categories: The information below assumes the property is on the main grid. It does this by adjusting the MPPT but instead of working to maximize power from the panels it reduces it. The majority of customers are approved for the export level they request. The Solar installer is telling me that they just started getting 0kW approvals back for about 9 out of 10 requests and so they dont believe they will be able to do many installs at all going forward. But a sub optimally configured grid sometimes forces installers into implementing setting that are probably less than ideal if the high voltage events in the grid were just occasions where there is too much generation and they do want have all generators throttle back to allow some time for rebalancing supply and demand. But if you suddenly switch off everything, there is more surplus solar power than youre allowed to export. And, when battery powered road vehicles with adequate distance capacity (I have read that VW expects to release a battery powered station wagon, with range between charges, of 700km, in 2023 (although, unless Australia wakes up, such vehicles will be unlikely to come to this neolithic country) ) are available, and, even for the rare ones that apparently, already exist in Australia (having not yet seen a battery powered vehicle in Australia, I wonder whether they are simply an urban myth, as to their presence in this backward country), when would they get charged, if people would only charge them at home? hbbf`b``3 I j VAr (var % rated VA) Hi All. Means that it caps the amount you can reduce your bills for power used outside of daylight hours? Actually I made a chart showing the percentage of electricity lines in each state that were SWER but I left it out for the sake of brevity. 0000037952 00000 n Put down your weapons.3. And for this reasons, I have increasingly seen that it is more challenging to run micros without the envoy which would no doubt be extra code required in later versions of the envoy to enforce implementation of various AS4777 and export limiting requirements that cant be done in the micros alone. The fact is that Powercor does not set an upper limit on the size solar panel system you can install, up to 30kW. While there are some energy management measures that could help around the edges, I cant think of any good solutions for the typical business. Or is the energy produced by the panels but dissipated somehow? Is this default, or would it be programmed in if the distributor required it? We have had solar for 6 years and just recently moved homes. 0000001260 00000 n I have spoken to one installer , but he couldnt really help me . 10kW of inverters with 11.325kW of panels. Youll also start receiving the SolarQuotes weekly newsletter, keeping you up to date on all the latest developments on Australias solar scene. (Although they will also allow an additional 5 kilowatts of battery inverter capacity.) He first became interested in environmental matters when he was four years old after the environment tried to kill him by smashing fist sized hailstones through the roof of his parents Toowoomba home. Recent work by Victorian DNSP Powercor on some problematic parts of its network is enabling more solar power from rooftop panels to be exported to the grid. Although my testing shows that the micros technically operate quite independently, it is important to understand, only the Envoy can provide some critical components to a properly working Enphase System. I have 3 x PV systems on one phase. 0000037764 00000 n What Happens to the Surplus Power That Can't Be Exported to the Grid? Three-phase homes can install up to 15 kilowatts of inverter capacity or 30 kilowatts with export limiting, except in South East Queensland where special permission is required from Energex to install an export limited inverter over 15 kilowatts. 0000028229 00000 n But you probably would not recover the cost of the battery within its lifetime. at night or not enough at day time ? Still a very long payback period, but not as long. If so, it would make replacing the whole system more viable which is exactly what I wanted to avoid (and such a waste!). Victorias AusNet network area: The eastern third of Victoria, not including Melbourne or French Island. (Or at least it will be expensive to set up well. Plus a Tesla Powerwall 2. While I dont know where you are a 4 kilowatt solar system should produce an average of around 18 kilowatt-hours a day in WA. Website link shows system producing well over 10 kW. I could not convince him that I knew what I was talking about! That can raise the voltage to a level dangerous to appliances. Though endless quibbling over unnecessary details might keep the presses churning, a FACT remains that Ive been using ever-more-cost-effective batteries since 1980. I am a bit confused about export. We installed solar power in November last year and were refused export (zero export). While losses increase as the solar power system size goes up, even with 10 kilowatts of panels which is twice the export limit, only 13% of generation is lost. I was always of the belief that a 5kW inverter limited the total output/ production from my 6.5kW solar system to 5 kW, irrespective of what is being used in the house. As far as I know, only solar installers can apply for export capacity in the Powercor area. The distributor deals with that by putting the voltage slightly up at the sending end. This means you tend to see panels at the end of strings shutdown soonest on voltage risk conditions, as they have the highest voltage rise being at the end of the string. I was really keen for this system with a battery as most of my power is used at night and I like the idea of power during blackouts, which do happen quite a lot here. Thank you. But you may as well just get a standard inverter and send your excess electricity into the grid. Is this correct? endstream endobj 351 0 obj <>/Filter/FlateDecode/Index[17 289]/Length 31/Size 306/Type/XRef/W[1 1 1]>>stream I have a 14kW solar array running Enphase IQ7+ microinverters (43 of them) hooked up to the grid in a 3-phase configuration in the Endeavour Energy area in NSW, and they currently have the profile AU default AS4777.2:2015 30kVa, Vv, Vw set. Assume positive intention.4. Thanks Ron. 100% You could approach SAPN and ask for special permission to install more solar capacity on an SWER but I would not be optimistic about that. Im in the Endeavour Energy area. is there a inverter that stops power going back Australian Rooftop Solar Powers Rise Astounding, But.. Australias Emissions: Electricity Down, Transport Up, Compare Feed-In Tariffs And Electricity Plans, Victorias Powercor Lifts Its Solar Exports Game, 3029: Hoppers Crossing, Tarneit, Truganina, 3030: Cocoroc, Derrimut, Point Cook, Werribee, Werribee South, 3551: Ascot (Greater Bendigo), Axe Creek, Axedale, Bagshot, East Bendigo, Emu Creek, Eppalock, Epsom, 3337: Kurunjang, Melton, Melton West, Toolern Vale, 3340: Bacchus Marsh, Balliang, Coimadai, Darley, Hopetoun Park, Long Forest, Maddingley, Merrimu, 3352: Bonshaw, Bungaree, Bunkers Hill, Burrumbeet, Cambrian Hill, Cardigan, Cardigan Village, Clarendon, 3305: Bolwarra, Cape Bridgewater, Gorae West, Heathmere, Portland, Portland North, Portland West, 3444: Baynton, Kyneton, Lauriston, Lyal, Metcalfe, Redesdale, Tylden 3465 Alma, Bowenvale, Daisy Hill, Maryborough. Thanks so much, David. The data has 5KW flat lining confirming more is being generated. I was told to set Power Limit to ON. 5 kilowatt inverter + 6.6 kilowatts of solar panels (no export limiting): 0%, 6 kilowatt inverter + 8 kilowatts of solar panels: 4% loss, 7 kilowatt inverter + 9 kilowatts of solar panels: 8% loss, 8 kilowatt inverter + 10 kilowatts of solar panels: 13% loss, So, on the one hand, the Victorian Government is. DC Input Power (Wp) 10000, from its published datasheet. 0000038218 00000 n I had applications rejected, and when I asked there was NO course for negotiation or discussion its the RULES is s synopsis of the responses. So an Enphase setup, without a continuously operating Envoy with not be providing this functionality and likely to raise some concerns in the AS4777.2015 certification process if they did not take steps to make sure these functions are always guaranteed to be implemented. However they have been advised that this wont be allowed anymore. Some networks will allow larger sizes than those outlined below, pending specific approval from the network. So you may decide adding a second system is worthwhile, or you may want to put it off until your current system develops problems and replace it with one large new system. Just last week, Powercor (Western Victoria) advised that they now have more room in the grid for export. You could have mentioned that SWER stands for Single Wire Earth Return and why that matters. There are versions without this consumption monitoring (old Non -s version of Envoy and even the Envoy-S without consumption monitoring). 0000038752 00000 n That is correct. ), converting to a maximum of 5kW of AC power, whilst the GW10K-MS provides for up to 13.5kW of panels generating capacity, across three MPPTs (strings? Your dedicated meter will inform the inverter, and it will immediately reduce the power, so it doesnt exceed 5 kilowatts1. Notify me of follow-up comments by email. Despite the low feed-in tariff you will receive it can still be worthwhile, especially if you can shift some electricity consumption to the middle of the day. . 0000001916 00000 n I wouldnt drive anything else. Australian Rooftop Solar Powers Rise Astounding, But.. Australias Emissions: Electricity Down, Transport Up, Compare Feed-In Tariffs And Electricity Plans, Solar Export Limiting What It Is & Why Its Useful. xref The naming of zones may differ between manufacturers but may appear as: Australia A - applies to the configuration of inverter settings in Victoria and all Eastern . They did say that with future upgrades we could reapply, but I cant find a way to do this. Whilst this may not be technically defined as export limiting, as the inverter specifications, specify that the inverter, whilst allowing up to an overload factor of 2, will only generate up to 5kW of A/C power document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Download the first chapter of The Good Solar Guide, authored by SolarQuotes founder Finn Peacock, FREE! But it seems the situation has been changing for the better in the last couple of months in a number of affected areas. Efficiency has and will improve further over time, but never to the point of perpetuity. 0000010603 00000 n In my mind though the Smart meter at the box would adjust the export limit in line with what the house is consuming? And also is it worth installing solar with 0 kWh limit with self consumption around 20-30%( payback 6-7 years). 0000004622 00000 n (2nd one APPROVAL/SITE SPECIFIC CONDITION(s): Total Solar Export must be limited to 5kW). 0000038484 00000 n And, no matter how powerful, the members of the legislatures imagine themselves to be, and, no matter how trump-like, they are, they can not stop the future. But depending on our network capacity, export constraints may influence the size of the unit they install. Thanks for the information. So far I have not seen much more than 5kW DC anyway, but in summer I would expect to see a curve thats flattened at the top during the high sun phase, as it is cut off by the inverter. The battery is charging from the DC current which is before the inverter. 0000018244 00000 n My sister has the same type of inverter (Goodwe) but she lives in the Estern suburbs of Victoria and she has been exporting but her Power Limit was set OFF. Im in regional WA with a rural 2 phase supply. The infrastructure is not sufficiently flexible to deal with this. As such, unless the investment pays for itself within at most 5-6 years, IMHO it is not a good investment/waste of money and natural resources. 0% So yeah, the Envoy is essentially all you need to configure export limiting or anything else if you have an Enphase microinverter set-up. Sorry Andrew: NQR. When a home is exported limited, all the power the solar inverter can produce is available for the home to use. After (almost) three months with no reply, has any reason been given, as to why export limited inverters are not allowed for single phase grid connections to the SWIS grid in WA? I guess it would be technically possible to have a solar system with a battery but still be connected to the grid as backup. If you are in the solar industry - try to get to the truth, not the sale.5. We do not prevent customers from installing solar for their own self-consumption. So my understanding of the info above is that my inverter will increase production in unison with demand until it hits 5kw? NSWs Endeavour Energy area: Western Sydney. IE if Im producing 8KW, the house is using 2KW it will still export 5kw? 100 litres alone means little, but if there are 100 litres per hour, this means 100 litre hours of output. While installing solar panels can still be worth it under these conditions, its a disincentive, increases payback time and is generally a pretty crappy state of affairs. We just applied for pre-approval from Powercor and were given a 0kW export approval which is going to make almost anything we choose uneconomical. Hello. So having a powerwall is way less useful for helping with an export limit than you would think. Generation sources can be, but are not limited to solar, wind and batteries. Thats a huge jump and even a smidge higher than the Powercor network wide average of 89%. Only residential homes with inverters of 5 kilowatts or less can receive the states. No active system controls whether you use inverter of imported power. Sorry if dumb question. So really apart from the requirement that the initial startup can only happy on voltages below 253v, I have no throttling until at least 285v and probably even higher. (Note: it is possible to install a larger system, say 10kW on a single phase property and meet the Powercor rules by export limiting the system . hb```f``sd`c`edd@ A >hp`86s8::\ MNmOe0pYuR`i g G7@ $n@]A#&S_2.dx f When it says that you can export 5kw, does that mean you can export up to 5kw PER HOUR? The solar installer or customer must have sought and received pre-approval from us for the requested capacity of the generator. But it took him about another ten years to focus on it in a way that wasnt really stupid, Good Article. Installers must also follow the recommendations of the inverter manufacturer and they may say the limit for panel capacity is less than one-third more than the panels capacity. If a home cant export any power at all then there is no financial reason to install a large solar system. Are Tesla Powerwall smart enough to let majority of power export to grid and only start charging battery as inverter approaches its export limit? After a major works program involving more than 500 different network alterations and other activities across nine key regions among the most constrained parts of the network, Powercor's new solar connections export approval rate of just over 60% at the start of the year has increased to above 90%. Theyd be higher for a sunnier location such as Perth and lower for cloudier places such as Melbourne or Hobart. But, if you are really keen, I suppose you could use a site such as PV Institutes Live PV Map to see how other solar systems in your general area are performing: Note that patchy cloud can produce a lot of variation in output. (We are conected to a 25Kw transformer, with 5 consumers connected.). Certainly this dumb meter is not capable of sending current from the inverter selectively to my home circuits and any excess to the grid? In contrast, most other network distributors set a strict upper limit on the size solar panel system you can install, typically 10kW for single-phase properties. I have just had a 6.6kw system installed with a Fronius 5kw inverter and am export limited to 3kw. Select the AS/NZS 4777.2:2020 Australia A setting. Or is there a build up of voltage in the system? If thats not a good option, you can consider getting a demand tariff and doing pumping outside the peak period when the cost of grid electricity will be relatively low. For example, our Solar Enablement program is intended to allow more customers to connect a 5kVa solar PV system with export capacity. Whats the logical and practical way forward? After a major works program involving more than 500 different network alterations and other activities across nine key regions among the most constrained parts of the network, Powercors new solar connections export approval rate of just over 60% at the start of the year has increased to above 90%. The reason for this query, is that, in the past, my understanding has been that, in WA, where export limiting is apparently, banned by the gratuitously oppressive state parliament, and, where a limit of a 5kW output inverter, is allowed, for a single phase grid connection on the SWIS grid, a limit of 6.66 kW of panels generating capacity, is imposed for single phase connections to the SWIS grid, and, thence, the limit of panels generating capacity, to which the federal solar panels rebate applies, for such a connection, has been the 6.66kW. Solar export limiting, or 'export limiting', occurs most often when there is more power being pushed into the grid than it can handle. Can one have micro-inverter panels without a gateway, and how would that be limited? Seem most solar places, even the ones the go on about how good they are, arent that good when presented with this, what seems to be a conundrum for them. As discussion of the topic of export limiting, is continuing, what,if any, is/are the direct effect differences to electricity grid load (as in the load on the wires, not the load as the term used for meaning demand), between a 5kW inverter, and a 10kW inverter with 5kW export limiting?
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